I have (2) Foster holly bushes, about 4-5' tall planted this past fall. On the back on numerous leaves, there are small black bugs with red rings around the bodies, which are eating the leaves. Is there a particular type of insecticide spray we should use?
Foster Holly Bush
Certified GKH Gardening Expert
There are several insects that could be feasting on your shrub. However, regardless of which one it is, I would recommend neem oil. This natural insecticide/fungicide is effective on a wide variety pests. Here is more information: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm